On 02/26/2012 11:48 AM, Brian J. Murrell wrote:
On 12-02-26 02:37 PM, Daniel Lee wrote:
3.22GB + (896MB * 2) = 5GB

There's no mystery here, you're simply out of space.
Except the mystery that I had to expand the filesystem to something
between 20GB and 50GB in order to complete the operation, after which I
could reduce it back down to 5GB.

Cheers,
b.

What's mysterious about that? When you shrink it btrfs is going to throw away unused data to cram it all in the requested space and you had empty space that was taken up by the metadata allocation. Did you compare btrfs fi df after you shrank it with before?
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